nice - run a command with a non-standard priority
nice [-n increment] utility [argument ...] nice [-increment] utility [argument ...]
The nice(1) command runs the specified utility with one or more given argument using a different scheduling priority. The increment is used to specify the change in priority. It can only be run successfully by a user with the appropriate privileges.
To give a command a higher priority use a negative increment.
If you do not specify an increment, the command runs at a slightly reduced priority.
To change the priority of a running process, use the renice(1) command.
The nice(1) utility takes the following options:
If nice(1) succeeds in running utility, it returns the exit status of utility. Otherwise, it returns one of the following values: